La thérapie cognitivo-comportementale (TCC) est une des approches principales en psychothérapie. Elle enseigne au patient à faire le lien entre les cognitions dysfonctionnelles et les comportements mésadaptés et à réévaluer les biais cognitifs qui maintiennent les symptômes en utilisant des stratégies telles que le questionnement socratique. La TCC évolue constamment afin d’en améliorer l’efficacité et l’accessibilité. Dans la dernière décennie, des approches de plus en plus populaires basées sur la pleine conscience et l’acceptation sont proposées. Elles ne visent pas la modification des pensées même si celles-ci peuvent paraître biaisées et dysfonctionnelles, mais cherchent plutôt à changer la relation de l’individu à ses symptômes. L’efficacité de ces approches commence à être documentée. Cet article vise à présenter le contexte historique qui a permis l’émergence de ce courant, les points de convergence et de divergence avec l’approche cognitivo-comportementale traditionnelle ainsi qu’une brève présentation des différentes thérapies basées sur l’acceptation et la pleine conscience.Cognitive behavioral therapy (CBT) is one of the main approaches in psychotherapy. It teaches the patient to examine the link between dysfunctional thoughts and maladaptive behaviors and to re- evaluate the cognitive biases involved in the maintenance of symptoms by using strategies such as guided discovery. CBT is constantly evolving in part to improve its’ effectiveness and accessibility. Thus in the last decade, increasingly popular approaches based on mindfulness and acceptance have emerged. These therapies do not attempt to modify cognitions even when they are biased and dysfunctional but rather seek a change in the relationship between the individual and the symptoms. This article aims to present the historical context that has allowed the emergence of this trend, the points of convergence and divergence with traditional CBT as well as a brief presentation of the different therapies based on mindfulness meditation and acceptance. Hayes (2004) described three successive waves in behavior therapy, each characterized by “dominant assumptions, methods and goals”: traditional behavior therapy, cognitive therapy and therapies based on mindfulness meditation and acceptance. The latter consider that human suffering occurs when the individual lives a restricted life in order avoid pain and immediate discomfort to the detriment of his global wellbeing. These therapies combine mindfulness, experiential, acceptance strategies with traditional behavior principles in order to attain lasting results. There are significant points of convergence between traditional CBT and therapies based on mindfulness meditation and acceptance. They are both empirically validated, based upon a theoretical model postulating that avoidance is key in the maintenance of psychopathology and they recommend an approach strategy in order to overcome the identified problem. They both use behavioral techniques in the context of a collaborative relationship in order to...